TimC
WI/UP Border
- Joined
- Apr 17, 2020
- Messages
- 139
I know this battery bank is on its last legs. I just want to know if this is normal end of life stuff or am I seeing an anomaly. I'm not really looking for what to replace the bank with if it is toast but if you insist I will listen.
I have what started out as 144 aHrs in my bank. It worked well for five years. And continues to work during the day when my 200w of solar keeps everything going. The last two camping trips I have had my refrigerator shut down due to low voltage each night. It was on High cut off when that happened. So I changed it to Low cutoff to see if it would keep running. Yes, I know this will drain my battery. It did continue to run below 9v.
My real question is about my battery bank, not the fridge operation. I don't want to make you read the meters but if it helps I've included a series of shots of my ammeters in a test early this morning when my solar was not producing much.
1- 12.64v - First shot shows ammeters with most everything off. Load on top, production on bottom.
2- 11.48v -Second photo shows just seconds after turning the fridge on.
3- 10.26v -Less than one minute later. Last image showing fridge volt meter at 9.8 volts
4- 9.81v -two minutes later, fridge shut off after photo taken
5- 12.59v -Two minutes later, most loads off
6- 12.65v -13 minutes later, most loads still off
Production is less than load as it was reset late afternoon with hazy skies and metering overnight use. I had to turn off the fridge during the night as it was set on High cut-off and would cycle on and off constantly. During the late afternoon (previous day) the ammeters were registering 13.2v while actively charging.
Thanks,
Tim
I have what started out as 144 aHrs in my bank. It worked well for five years. And continues to work during the day when my 200w of solar keeps everything going. The last two camping trips I have had my refrigerator shut down due to low voltage each night. It was on High cut off when that happened. So I changed it to Low cutoff to see if it would keep running. Yes, I know this will drain my battery. It did continue to run below 9v.
My real question is about my battery bank, not the fridge operation. I don't want to make you read the meters but if it helps I've included a series of shots of my ammeters in a test early this morning when my solar was not producing much.
1- 12.64v - First shot shows ammeters with most everything off. Load on top, production on bottom.
2- 11.48v -Second photo shows just seconds after turning the fridge on.
3- 10.26v -Less than one minute later. Last image showing fridge volt meter at 9.8 volts
4- 9.81v -two minutes later, fridge shut off after photo taken
5- 12.59v -Two minutes later, most loads off
6- 12.65v -13 minutes later, most loads still off
Production is less than load as it was reset late afternoon with hazy skies and metering overnight use. I had to turn off the fridge during the night as it was set on High cut-off and would cycle on and off constantly. During the late afternoon (previous day) the ammeters were registering 13.2v while actively charging.
Thanks,
Tim